Intertwisted net having square-shaped meshes



Apnl 8, 1930. 'r. "YAMAMOTO INTERTWISIED NET HA V'ING SQUARE SHAPED MESHES Fil ed Dec. 22. 192s INVENT;

9 64 W ATTORNEYS Patented A r. 8, 1930 1-? 'I'AKEJ'IRO YAMAMO'I'O, OF AKASHI, HYOGO, JAPAN INTERTWISTED 'NET HAVING SQUARE-SHAPED MESHES Application filed December 22, 1928, Serial No. 327,976, and in Japan December 28, 1927.

This invention relates to improvements in intertwisted nets and it consists of warp and weft, each made of two strands, which are intertwisted knotlessly at their intersection,

5 thus forming the squareshaped meshes.

The object of this inventionis to obtain a strong netting having the square-shaped meshes, by the warp and weft intersecting at right angles, without any knotting, which weakens the net very much.

Fig. 1 shows a net embodying this invention.

Fig. 2 shows a condition of the strands intersecting each other. i

Fig.3 shows the joint twisted tightly.

The net having the square-shaped meshes were made, up to date, by knotting only and the threads, the warp and the weft, are not directed in the straight lines but change their directions at every intersection, that is to say, one thread is the warp at a time, but the weft at the next, thus the bending of the thread at the intersection weakens the net very much. In this invention, the warp is always the warp and the weft is always weft and there is no knotting but the strands are intertwisted mechanically, thus the cost is very cheap and the net is very strong.

All the intertwisted net hitherto used have the diamond shaped meshes, because it was very difficult to intertwist the strands at right angles mechanically.

If the net having the diamond shaped meshes stretched in one direction, the meshes are cramped, hence a quantity of fish net is wanted if the meshes are the diamond shape comparing with that ofthe square shape.

The present net has been invented to obviate these obstacles, that is to say, the threads, 40 the warp and weft, are always in the straight lines and not bent at their intersection. The joint may be made by intertwisting mechanically the strands of the threads, but no knot at all.

In the drawings, A designates the warp made of two strands and B the weft made of two strands and these threads cross at right angle at the point C at which point the four strands of the warp and weft intertwist in such a manner as is shown in Fig. 2.

Considering the strands of Fig. 2 individually, and tracing their courses at the point of intersection, it is seen that strand 1 of the warpthread or cordpasses over strands 3 and 40f the weft thread or cord, then passes under strands 3 and 2 and lastly over strand 3.

Strand 2 ofthe same warp thread or cord passes under strand 4, over strand 1, under strand 3, over strand 4 and lastly under strand 4. Strand 3 of the weft thread or cord passes under strand 1, then over. strand 4, overstrands 3 and 1, and lastly under strand 1. 3

server, and will be changed if the parts of Fig. 2 are viewed from the'otherside, or if the direction in which the strands run'is considered differently.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is An intertwisted net comprising, in combination, a series of warp threadsand a series of weft threads, all said threads consisting of two strands only, each warp thread interseating with the weft threads so that the two strands of the warp thread continue in the samedirection beyond the points of intersection, and at the points of intersection pass between thestrands of the weft threads so as to interlock therewith without knotting or separate splicing, thereb preventing shifting of the warp and weft t reads at said points of intersection; said interlocking being accomplished as follows: passing strand number 1 of a warp thread over strands 3 and 4 of the weft thread, then passingthe same warp strand under strands 3 and 2 and lastly over strand 3; passing strand number 2 of the same warp thread under strand 4, over strand 1, under strand 3, over strand 4 and lastly under strand 4; strand 3 of the Weft thread passing under strand 1, as stated, over strand 4, over strands 3 and 1, as stated,- and under strand 1, as stated.

In testimony whereof, I have signed my name to this specification at Tokyo Japan, this 30th day of November, 1928.

TAKEJIRO YAMAMQTO. 

